Anti-electromagnetic interference device and method for radio wave perspective instrument receiver

Abstract

The invention discloses an anti-electromagnetic interference device and method for a radio wave perspective instrument receiver. The anti-electromagnetic interference device comprises a receiving host, a signal connecting cable and a tuning frequency-selecting receiving antenna, the receiving host comprises various digital components, various analog components and various accessory components; thetuning frequency-selecting receiving antenna comprises a tuning circuit and a loop antenna, the tuning frequency-selecting receiving antenna, the signal connecting cable and the receiving host all adopt an electromagnetic shielding structure design, the interference of external electromagnetism of the radio wave perspective instrument receiver is solved, and a good effect is obtained in on-site operation; digital components, analog components and accessory components in the receiving host adopt electromagnetic shielding structure design, so that electromagnetic interference among circuits inthe receiving host is solved, secondary electromagnetic shielding is performed, interference of external electromagnetism on the receiving host is enhanced and prevented, and a good effect is achievedin field operation.

Description

technical field [0001] The invention relates to the technology in the field of anti-interference of electronic equipment circuits, in particular to an anti-electromagnetic interference device and method for a radio wave perspective instrument receiver. Background technique [0002] Beginning in the early 1980s, China began to use radio wave perspective technology to carry out research and development to detect abnormalities in mine working faces. After nearly 50 years of development and application, certain results have been obtained, and it has been widely used in the structural detection of mining working faces in mines. However, due to the constraints of geological conditions and the performance conditions of the radio wave perspective instrument itself, there are unsatisfactory shortcomings in the actual application detection process, mainly manifested in: 1. The radio wave perspective instrument works in the field of large penetration distance and low resistivity In su...

AI Technical Summary

Problems solved by technology

However, due to the constraints of geological conditions and the performance conditions of the radio wave perspective instrument itself, there are unsatisfactory shortcomings in the actual application detection process, mainly manifested in: 1. The radio wave perspective instrument works in the field of large penetration distance and low resistivity In surface occasions, it is necessary to receive extremely weak effective signals during effective detection. Due to the existence of external power supplies, communication cables, metal anchor nets, anchor rods, and some production equipment, these will generate electromagnetic interference and have a great impact on the effective signals received. Big; 2. There is a problem of electromagnetic mutual interference inside the radio wave perspective instrument itself. Since the power supply circuit, display drive circuit, digital circuit, analog circuit, power supply circuit, etc. will all generate electromagnetic radiation, there is mutual electromagnetic interference between them. Adversely affect the reception of weak signals

[0003] At present, the radio wave perspective receivers on the market also adopt various anti-electromagnetic interference methods, but with little effect, and cannot receive extremely weak signals, thus affecting the detection distance and detection accuracy

All in all, the radio wave perspective receiver needs to solve two problems: 1. The problem of external electromagnetic interference; 2. The problem of electromagnetic interference between the internal circuit and structure of the receiver

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